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TI UCC38C42DGKRRoHS

Manufacturer
TI
MPN
UCC38C42DGKR
LCSC Part #
C544755
Packaging
VSSOP-8-0.65mm
Customer #
Key Attributes
1 200mA VSSOP-8-0.65mm DC DC Switching Controllers RoHS
Datasheetpdf iconTI UCC38C42DGKR
In-Stock: 5
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QtyUnit PriceTotal Amount
1+$ 2.35$ 2.35
10+$ 2.2961$ 22.96
30+$ 2.2591$ 67.77
100+$ 2.2221$ 222.21
Standard Packaging2500/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerTI
PackagingVSSOP-8-0.65mm
Synchronous RectifierNo
FeaturesCycle-by-cycle current limiting;Frequency synchronization
Number of Channels1
TopologyFlyback
Operating Voltage9V~18V
Switch tube (built-in/external)External
Output Voltage-
Operating Temperature0℃~+85℃@(TJ)
Output Current200mA
Frequency - Switching1MHz
Output Type-
Function-
Quiescent Current2.3mA
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Introduction

AI Translation

The UCCx8C4x series is a high-performance current-mode PWM controller. It is an enhanced BiCMOS version with pin-to-pin compatibility with the industry-standard UCx84xA series and UCx84x series PWM controllers. BiCMOS technology offers lower power consumption to improve efficiency and provides faster current sensing and oscillator frequency. Additionally, there are lower 7V start-up voltage versions, UCCx8C40 and UCCx8C41, for battery systems. The UCC28C4x series operates in a temperature range of –40°C to 125°C, and the UCC38C4x series operates in a temperature range of 0°C to 85°C. This series provides the necessary functions to control fixed-frequency, peak current-mode power supplies and offers the following performance advantages. The device supports high-frequency operation up to 1MHz, suitable for high-speed applications. Compared with the UCCx8C4x series, the trimmed discharge current allows for more precise programming of the maximum duty cycle and dead-time limits. Reducing the start-up and operating currents minimizes start-up losses and achieves the lowest possible operating power consumption, thereby improving efficiency. The device also features a fast 35ns current-sense-to-output delay time, providing excellent over-load protection for the power switch. It has a peak output current capability of ±1A and improved rise and fall times, enabling direct driving of large external MOSFETs. The UCCx8C4x series is available in 8-pin VSSOP (DGK) and 8-pin SOIC (D) packages.

Features

AI Translation
  • Enhanced drop-in replacement for UCx84x and UCx84xA series with pin-to-pin compatibility
  • Operating frequency: 1MHz max
  • 50μA startup current, 100μA max
  • Low operating current: 2.3mA (fOSC = 52kHz)
  • Fast cycle-by-cycle overcurrent limiting: 35ns
  • Peak drive current: ±1A; rail-to-rail output: 25ns rise time, 20ns fall time
  • 2.5V error amplifier reference with ±1% accuracy
  • Trimmed oscillator discharge current
  • UVLO protection
  • VSSOP-8 package minimizes board space

Applications

AI Translation
  • Switching mode power supplies
  • General-purpose single-ended DC/DC or offline isolated power converters
  • On-board power modules